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Julius Volz wrote:
Ah, but the set/get-sockopt calls also pass a size argument, which is
the size of the passed structs. If the kernel and userspace struct
sizes don't match, it is treated as an error. Is this in case
different compilers pad the structs differently, even if the IPVS
version stays the same?
So we could disable the size checks of the passed structs, or key on it to
determine if the older ABI was used, keeping a list of the structs that
had different sizes around, but that sounds like a gross hack which would
get worse if any other fields are added. It would also mean new userspace
binaries with the new fields wouldn't work with older kernels, is that a
problem? Is this better than the alternatives of breaking the ABI, or
duplicating code into a separate ABI?
Vince
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